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People with type O-negative blood are universal donors. That is, any patient can receive a transfusion of O-negative blood. Only 7.2% of the American population has O-negative blood. If 10 people appear at random to give blood, what is the probability that at least 1 of them is a universal donor?

(a) 0.526
(b) 0.72
(c) 0.28
(d) 0
(e) 1

1 Answer

3 votes
It would be c because percentages are just the same as decimals but multiplied by 100.
User Zach Russell
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